Strangeness production in high-energy collisions and Hawking–Unruh radiation

Tawfik, A.; Yassin, Hayam; Elyazeed, Eman R. Abo

doi:10.1142/s021830131750001x

Cited by 8 publications

(24 citation statements)

References 61 publications

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“…Also, we find that the generic (non)extensive temperature decreases with the increase in both particle masses and strange qunatum numbers, while the Boltzmann temperature shows an opposite dependence. On the other hand, it is worthy highlighting that the generic (non)extensive temperature obtained agrees well with previous studies [44,45], in which it was concluded that the freezeout of such particles with large masses and large strange quantum numbers takes place earlier than the one for light particles with small strange quantum numbers. [1].…”

Section: B Correlations Between Resulting Fit Parameterssupporting

confidence: 91%

“…First, T G obtained from the generic (non)extensive statistics agrees well with refs. [44,45] but apparently disagrees with ref. [54].…”

Section: A Statistical Fits To Pt Spectracontrasting

confidence: 66%

“…The present script focuses on strange particles as they are suitable for the manifestation of the nonextensive statistical nature of the particle production and can compared with the conclusions drawn in refs. [44,45]. They can as well come up with an essential contribution to the conventional dependence of the temperature on the strange quantum numbers, which likely strengthens the signature proposed for the QGP formation.…”

Section: Introductionsupporting

confidence: 62%

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Transverse momentum spectra of strange hadrons within extensive and nonextensive statistics

Yassin,

Elyazeed,

Tawfik

2019

Preprint

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Using generic (non)extensive statistics, in which the underlying system autonomously manifests its extensive and nonextensive statistical nature, we extract various fit parameters from the CMS experiment and compare these to the corresponding results obtained from Tsallis and Boltzmann statistics. The present study is designed to indicate the possible variations between the three types of statistical approaches and characterizes their dependence on collision energy, multiplicity, and size of the system of interest. We analyze the transverse momentum spectra pT of the strange hadrons K 0 s , Λ, and Ξ − produced in Pb+Pb collisions, at √ sNN = 2.76 TeV, in p+Pb collisions, at √ sNN = 5.02 TeV, and in p+p collisions, at √ sNN = 7 TeV. From the comparison of the resulting fit parameters; temperature T , volume V , and nonextensvie parameter d, with calculations based on Tsallis and Boltzmann statistics, remarkable differences between the three types of statistics are determined besides a strong dependence on size and type of the colliding system. We conclude that the produced particles with large masses and large strange quantum numbers likely freeze out earlier than the ones with smaller masses and less strange quantum numbers. This conclusion seems not depending on the type of the particle or the collision but apparently manifesting transitions from chemical (larger temperature) to the kinetic freezeouts (lower temperature). For the first university (equivalent) class c ∼ 1, the decrease in the second one, d, with increasing energy and collision centrality highlights that the system departs from nonextensivity (non-equilibrium) and apparently approaches extensivity (equilibrium) indicating that the Boltzmann statistics becomes the proper statistical approach in describing that system. Last but not least, we present analytical expressions for the energy dependence of the various fit parameters.

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Section: B Correlations Between Resulting Fit Parameterssupporting

confidence: 91%

“…First, T G obtained from the generic (non)extensive statistics agrees well with refs. [44,45] but apparently disagrees with ref. [54].…”

Section: A Statistical Fits To Pt Spectracontrasting

confidence: 66%

Section: Introductionsupporting

confidence: 62%

See 1 more Smart Citation

Transverse momentum spectra of strange hadrons within extensive and nonextensive statistics

Yassin,

Elyazeed,

Tawfik

2019

Preprint

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“…The value of both temperatures (Tsallis and Boltzmann) increase with the increasing in both the particle mass and the strangeness number and also with the multiplicity classes for all systems. The direct relationship between the temperature and the strangeness number of hadrons is unlike the known behaviour obtained previously in extensive models (particle yields and ratios) [53,54], so we will work on the confirmation of the behaviour of this dependence in extensive and nonextensive particle yields and ratios in future work. Our calculations are compared with the modified Tsallis results [30] and agreed with each other.…”

Section: Resultsmentioning

confidence: 76%

Transverse momentum $p_{\mathrm{T}}$ spectra of strange particles production in different collisions at $\sqrt{s_{NN}}= 2.76, 5.02,$ and $7$ TeV

Yassin,

Elyazeed

2018

Preprint

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We analyse the transverse momentum p T spectra of strange particles K 0 s , Λ, and Ξ − produced in Pb+Pb collision at √ s N N = 2.76 TeV, p+Pb collision at √ s N N = 5.02 TeV, and p+p collision at √ s N N = 7 TeV in different multiplicity events measured by the CMS experiment at the Large Hadron Collider. The p T spectra of strange particles are fitted by Tsallis statistics and Boltzmann statistics, respectively. The fitting parameters are studied as a function of the multiplicity events for all systems. The Tsallis temperature (T Ts ), Boltzmann temperature (T Boltz ), and radius of the system (R) increase with both the mass and strangeness number of the particle and also increase with the multiplicity events. The non-extensive parameter (q) decreases with the increase in the mass of the particle and also decrease with the increase in the multiplicity events which means that the system tends to thermodynamic stabilization. The extracted temperatures from the two statistics for the strange particles are exhibited a linear correlation.

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“…this quantity is averaged in such a statistical ensemble. It was shown that the freezeout temperature likely vary with the number of strange quarks included in[42,43].…”

mentioning

confidence: 99%

Strangeness chemical potential from the baryons relative to the kaons particle ratios

Tawfik

Wahab

Yassin

et al. 2017

Int. J. Mod. Phys. E

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From a systematic analysis of the energy-dependence of four antibaryon-to-baryon ratios relative to the antikaon-to-kaon ratio, we propose an alternative approach determining the strange-quark chemical potential (µ s ). It is found that µ s generically genuinely equals one-fifth the baryon chemical potential (µ b ). An additional quantity depending on µ b and the freezeout temperature (T ) should be added in order to assure averaged strangeness conversation. This quantity gives a genuine estimation for the possible strangeness enhancement with the increase in the collision energy. At the chemical freezeout conditioned to constant entropy density normalized to temperature cubed, various particle ratios calculated at T and µ b and the resultant µ s excellently agree with the statistical-thermal calculations.

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Strangeness production in high-energy collisions and Hawking–Unruh radiation

Cited by 8 publications

References 61 publications

Transverse momentum spectra of strange hadrons within extensive and nonextensive statistics

Transverse momentum spectra of strange hadrons within extensive and nonextensive statistics

Transverse momentum $p_{\mathrm{T}}$ spectra of strange particles production in different collisions at $\sqrt{s_{NN}}= 2.76, 5.02,$ and $7$ TeV

Strangeness chemical potential from the baryons relative to the kaons particle ratios

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